Eyes And Teeth Going Haywire With Rigify Rig And MakeHuman Model
Select the head bone in Pose Mode, then your mesh with RMB and press Ctrl+Tab. Hit Tab to enter Edit Mode (check the Show Weights in Display panel of the Properties Shelf [N] to see the weights), mark the head vertices (with B or C), then go to Object Data header and assign the 1.000 weight to the head's vertex group.


To solve the issue with eyebrows and eyes select the neck bone in Pose Mode and correct the weight values for each one.